Analysis: A new match ball for every World Cup tournament brings fresh aerodynamic calculations and this year's four-panel ball is no exception Every four years, the men's World Cup delivers some ...

Quantum physics is the study of matter and energy at its most fundamental level. A central tenet of quantum physics is that energy comes in indivisible packets called quanta. Quanta behave very ...

Condensed-matter physics is the study of substances in their solid state. This includes the investigation of both crystalline solids in which the atoms are positioned on a repeating three-dimensional ...